THE EXISTENCE AND UNIQUENESS OF TIME-PERIODIC SOLUTIONS TO THE NON-ISOTHERMAL MODEL FOR COMPRESSIBLE NEMATIC LIQUID CRYSTALS IN A PERIODIC DOMAIN

In this paper,we are concerned with a three-dimensional non-isothermal model for the compressible nematic liquid crystal flows in a periodic domain.Under some smallness and structural assumptions imposed on the time-periodic force,we establish the existence of the time-periodic solutions to the system by using a regularized approximation scheme and the topological degree theory.We also prove a uniqueness result via energy estimates.

宣肺败毒颗粒缓解低温高湿环境下冠状病毒引起的肺炎

本研究旨在探讨宣肺败毒颗粒(XFBD)在寒冷和潮湿条件下的冠状病毒肺炎模型中的作用及其机制。为模拟冠状病毒感染小鼠模型,采用寒冷和潮湿条件下感染冠状病毒229E株。随后,XFBD在第五天开始给药,持续三天。通过评价行为特征、肺指数、病毒载量和肺部病理变化来评估XFBD对模型小鼠的治疗效果。通过酶联免疫吸附试验测定白细胞介素-6、白细胞介素-10和肿瘤坏死因子-α的水平。使用流式细胞术检测CD4+T细胞、CD8+T细胞和B细胞的比例。结果显示,对照组的小鼠活泼好动,状态良好,毛发光亮。造模后,模型小鼠表现出活动减少、毛发杂乱且无光泽、食欲不振。服用不同剂量的XFBD后,冠状病毒肺炎小鼠的症状均有作用改善。不同剂量的XFBD能显著下调炎症因子,调节CD4+T细胞、CD8+T细胞和B细胞的表达,并且高剂量XFBD的疗效更佳。综上所述,XFBD对寒冷和潮湿条件下感染的冠状病毒肺炎小鼠有良好的治疗作用,其能改善小鼠的行为特征和胃肠道指数,降低肺部病毒滴度和组织病理学改变,这与抑制炎症反应和增加淋巴细胞数量有关。

Lower serum magnesium concentration and higher 24-h urinary magnesium excretion despite higher dietary magnesium intake in athletes:a systematic review and meta-analysis

Magnesium plays a critical role in the human's life activities and energy metabolism. This study aimed to evaluate the magnesium status of athletes via a systematic review of cross-sectional studies. A comprehensive systematic search was conducted in PubMed, Web of Science, SPORTDiscus, Cochrane Library electronic databases, and other sources before April 5, 2021. Fourteen studies were included in the systematic review, involving 855 athletes and 521 control subjects. Serum magnesium concentration was significantly lower in athletes(mean difference(MD):-0.04 mmol/L;95% confidence interval(CI):-0.06 to-0.01;P = 0.02)in spite of significantly higher dietary magnesium intake(MD: 51.72 mg/day;95% CI: 14.62 to 88.83;P = 0.006). Meta-analysis showed that 24-h urinary magnesium excretion in athletes was significantly higher than that in the untrained population(MD: 0.76 mmol/day;95% CI: 0.11 to 1.41;P = 0.02). Despite higher total dietary magnesium intake, athletes generally have lower serum magnesium concentration and higher 24-h urinary magnesium excretion, demonstrating that the magnesium requirement of athletes is higher than the untrained population. It is necessary to carry out a dietary assessment and nutrition counseling to help athletes adopt proper diets to meet their nutritional needs in exercise.

Relationship Between the Efficacy of Low-Dose Glucocorticoids Combined with Tacrolimus in the Treatment of Adult Idiopathic Membranous Nephropathy and the Level of Serum Anti-PLA2R Antibodies

Objective:To further evaluate the efficacy and safety of low-dose glucocorticoids combined with tacrolimus in the treatment of adult idiopathic membranous nephropathy(IMN)in a clinical setting.Methods:We carried out a single-center prospective study of 88 patients with IMN who were admitted into the Affiliated Hospital of Hebei University from January 2019 to December 2021,and the participants were divided into two groups based on their serum anti-PLA2R antibody levels:the negative group and the positive group.46 patients were positive for anti-PLA2R antibodies and 42 were negative.Results:After 6 months of treatment,the serum albumin,cholesterol,and 24h urine protein quantification in the anti-PLA2R negative group improved more significantly compared to the positive group(P<0.05);after 6 months of treatment,the remission rate of the positive group was significantly lower than that of the negative group,and(P<0.05);Conclusion:After treatment with tacrolimus combined with low-dose glucocorticoids,patients with idiopathic membranous nephropathy who were tested positive for anti-PLA2R antibodies had a higher overall remission rate compared those who were tested negative for serum anti-PLA2R antibodies.

Risk Factors of Infection in Nephrotic Syndrom

Objective:To determine the risk factors of infection in patients with nephrotic syndrome.Methods:A retrospective study was conducted on 155 patients with nephrotic syndrome under our department from January 2019 to December 2019.Among them,43 cases had infection,and the rate of infection was 27.74%.The risk factors of infection were analyzed.Results:Among the 155 patients with nephrotic syndrome,43 cases developed infection,including 3 cases of upper respiratory tract infection(6.98%),33 cases of lower respiratory tract infection(76.74%),3 cases of skin infection(6.97%),3 cases of urinary tract infection(6.97%),and 1 case of facial nerve infection(2.32%).Compared with the group without infection,the group with infection had lower serum albumin and immunoglobulin G(IgG)levels as well as higher serum creatinine and 24-hour urinary protein levels(P<0.05).Multivariate logistic regression analysis showed that decreased serum albumin(odds ratio[OR]=1.14;P<0.01)and IgG(OR=1.1;P<0.144)were independent risk factors for infection.Conclusion:Respiratory infection is the most common infection in nephrotic syndrome,and the decrease in serum albumin and IgG are independent risk factors for infection.

PARK基因家族在骨骼肌肌病中的研究进展

PARK作为帕金森病的致病基因家族,在帕金森病的发生发展中发挥了关键作用。近年来的研究表明,这一关键基因家族在骨骼肌肌病的发生发展中也发挥着重要作用,作为运动神经元修饰剂,保护神经元的完整性,参与骨骼肌神经–肌肉接头处神经信号的传递,骨骼肌能量代谢及线粒体质量控制、同时调控肌生成因子表达,促进肌肉再生,维持肌肉含量和功能。本文主要综述了PARK基因家族在骨骼肌肌病中的研究进展,总结了骨骼肌肌病发生的分子机制及研究方向,以期为进一步研究PARK家族在骨骼肌肌病发生发展中的作用提供参考,为理解骨骼肌肌病分子病理机制及临床诊断和治疗带来新的启示。

Impacts of exercise interventions on different diseases and organ functions in mice

Background'. In recent years, much evidence has emerged to indicate that exercise can benefit people when performed properly. This reviewsummarizes the exercise interventions used in studies involving mice as they are related to special diseases or physiological status. To furtherunderstand the effects of exercise interventions in treating or preventing diseases, it is important to establish a template for exercise interventionsthat can be used in future exercise-related studies.Methods'. PubMed was used as the data resource for articles. To identify studies related to the effectiveness of exercise interventions for treatingvarious diseases and organ functions in mice, we used the following search language: (exercise [Title] OR training [Title] OR physical activity[Title]) AND (mice [title/abstract] OR mouse [title/abstract] OR mus [title/abstract]). To limit the range of search results, we included 2 filters:one that limited publication dates to "in 10 years,^ and one that sorted the results as "best match^^. Then we grouped the commonly used exercisemethods according to their similarities and differences. We then evaluated the effectiveness of the exercise interventions for their impact on diseasesand organ functions in 8 different systems.Results'. A total of 331 articles were included in the analysis procedure. The articles were then segmented into 8 systems for which the exerciseinterventions were used in targeting and treating disorders: motor system (60 studies), metabolic system (45 studies), cardio-cerebral vascularsystem (58 studies), nervous system (74 studies), immune system (32 studies), respiratory system (7 studies), digestive system (1 study), and thesystem related to the development of cancer (54 studies). The methods of exercise interventions mainly involved the use of treadmills, voluntarywheel-running, forced wheel-running, swimming, and resistance training. It was found that regardless of the specific exercise method used, mostof them demonstrated positive effects on various systemic diseases and organ functions. Most diseases were remitted with exercise regardless ofthe exercise method used, although some diseases showed the best remission effects when a specific method was used.Conclusion-. Our review strongly suggests that exercise intervention is a cornerstone in disease prevention and treatment in mice. Because exerciseinterventions in humans typically focus on chronic diseases, national fitness, and body weight loss, and typically have low intervention com・pliance rates, it is important to use mice models to investigate the molecular mechanisms underlying the health benefits from exerciseinterventions in humans.

微波消解-电感耦合等离子体质谱法测定儿童爽身粉中微量硼

利用微波消解前处理法,通过优化前处理和检测条件,针对儿童爽身粉(三岁以下)中不得检出硼酸和硼酸盐的规定,探索了一种电感耦合等离子体质谱(ICP-MS)法测定儿童爽身粉中的微量硼,实现了对硼元素在低质量浓度0~20 ng/mL范围内的准确定量。通过优化,最终选择HNO_(3)^(-)H_(2)O_(2)消解体系,消解程序为最终温度185℃,保持30 min,仪器分析模式为Nogas模式;同时考察了样品中共存离子的干扰情况。结果表明,Na^(+)、K^(+)、Ca^(2+)、Mg^(2+)、Fe^(2+)、Al^(3+)、Pb^(2+)、Zn^(2+)对硼的测定不产生干扰。该方法中硼的线性相关系数(r)为0.9999,检出限为0.02μg/g,定量限为0.07μg/g。在低、中、高三个质量浓度水平下的加标平均回收率为99.2%~101.4%。在阳性样品中,测定值的相对标准偏差RSD(n=6)为1.3%。实验结果表明,该方法准确、可靠、灵敏度高,适用于儿童爽身粉中硼酸和硼酸盐的测定,有助于加强对儿童爽身粉中硼酸和硼酸盐的风险管控。

ON INTEGRABILITY UP TO THE BOUNDARY OF THE WEAK SOLUTIONS TO A NON-NEWTONIAN FLUID

This work consider boundary integrability of the weak solutions of a non-Newtonian compressible fluids in a bounded domain in dimension three, which has the constitutive equartions as ■The existence result of weak solutions can be get based on Galerkin approximation. With the linear operator B constructed by BOGOVSKII, we show that the density ■is square integrable up to the boundary.

Prognostic significance of a combined and controlled nutritional status score and EBV-DNA in patients with advanced nasopharyngeal carcinoma:a long-term follow-up study

Objective:Several studies have reported that the controlling nutritional status(CONUT)score is a prognostic predictor for survival among patients with different types of cancer.We assessed the prognostic value of changes in the CONUT score during treatment and theΔCONUT-EBV DNA score in patients with advanced nasopharyngeal carcinoma(NPC).Methods:We retrospectively analyzed 433 patients with advanced NPC having no evidence of metastasis from January 2007 to June 2011;the patients underwent radical concurrent chemoradiotherapy(CCRT)at Sun Yat-sen University Cancer Center and were grouped based on theirΔCONUT andΔCONUT-EBV DNA scores.Kaplan-Meier curves were used to compare the patient outcomes according to the cut-offΔCONUT score and theΔCONUT-EBV DNA scoring system.Results:Among all patients,overall survival(OS)was independently predicted by a highΔCONUT score(P=0.031)and high EBV DNA(P<0.001).TheΔCONUT-EBV DNA score[OS area under the curve(AUC)=0.621;progression free survival(PFS)-AUC=0.612;distant metastasis-free survival(DMFS)-AUC=0.622]was more predictive of OS,PFS,and DMFS in patients with advanced NPC than theΔCONUT score(OS-AUC=0.547;PFS-AUC=0.533;DMFS-AUC=0.522)and pretreatment plasma EBV DNA levels alone(OS-AUC=0.600;PFS-AUC=0.591,DMFS-AUC=0.610).TheΔCONUT-EBV DNA score was significantly correlated with OS,PFS,and DMFS in patients with advanced NPC treated with CCRT.Conclusions:TheΔCONUT-EBV DNA score may be useful in clinical practice as a convenient biomarker for predicting the outcomes in patients with advanced NPC treated with CCRT.

Pharmacodynamics Study in vitro and in vivo of Zijin Huadu Suppository Treating Cervicitis

[Objectives] To observe the pharmaceutical effect of Zijin Huadu suppository on treatment of cervicitis induced by virus,bacteria and phenol in vivo and in vitro,and provide experimental basis for evaluating its therapeutic effects for cervicitis. [Methods]Real-time RT-PCR and CPE methods were used to observe the inhibition of Zijin Huadu suppository on virus,and turbidimetry was used to observe bacteriostatic action; HE pathological section was used to observe cervicitis of rat,and enzyme-linked immunosorbent assay was used to detect virus' s expression in cervical tissue.[Results]In cervicitis rat model infected by HPV16,Zijin Huadu suppositories at the doses of 1. 2,0. 6 and0. 3 g/( kg·d) had significant inhibitory effect on HPV16 expression in cervical tissues,and the doses of 1. 2 and 0. 6 g/( kg·d) had significantly inhibitory effect on pathological changes of cervical tissues. In cervicities rat models infected mixedly by Escherichia coli,Neisseria gonorrhoeae and Staphylococcus aureus,Zijin Huadu suppositories at the doses of 1. 2 and 0. 6 g/( kg·d) had significant inhibitory effect on pathological changes of cervical tissues. In cervicitis rat models induced by chemical substances,Zijin Huadu suppositories at the dose of1. 2 g/( kg·d) had significant inhibitory effect on vagina and cervix lesions in rats. In vitro,Zijin Huadu suppository showed obvious inhibitory effects on HSV-2,HPV16,Staphylococcus aureus,Staphylococcus albus,Staphylococcus epidermidis,group B Streptococcus,E. coli,Pseudomonas aeruginosa,Proteusbacillus vulgaris,Neisseria gonorrhoeae and Candida albicans.[Conclusions] Zijin Huadu suppository has obvious inhibitory effect in vitro on viruses and bacteria,and could obviously improve the phenol-induced cervicitis.

Establishment of a prognostic scoring model for regional recurrent nasopharyngeal carcinoma after neck dissection

Objective:The main aim of this study was to establish a scoring model to predict risk of progression and survival in patients with regionally recurrent nasopharyngeal carcinoma(NPC).Methods:Three hundred and forty-eight patients subjected to neck dissection from 2003 to 2017 were included for study.Clinicopathologic information for each patient was analyzed.Independent prognostic factors were selected using the Cox proportional hazards model and incorporated into the scoring model.Concordance index(C-index)and calibration curves were used to verify discrimination and calibration,respectively and the results validated using bootstrap resampling.Results:Microscopic positive lymph node>2[hazard ratio(HR),2.19;95%confidence interval(CI),1.30–3.68;P=0.003],extranodal extension(HR,2.75;95%CI,1.69–4.47;P<0.001),and lower neck involvement(HR,1.78;95%CI,1.04–3.04;P=0.034)were identified from multivariate analysis as independent factors for overall survival(OS).A qualitative 4-point scale was generated to stratify patients into 4 risk groups for predicting OS and progression-free survival(PFS).The novel scoring model demonstrated enhanced discrimination(C-index=0.69;95%CI,0.62–0.76)relative to the original recurrent tumor-node-metastasis(rTNM)staging system(C-index=0.56;95%CI,0.50–0.62),and was internally validated with a bootstrap-adjusted C-index of 0.70.The calibration curve showed good agreement between predicted probabilities and actual observations.Conclusions:The scoring system established in this study based on a large regionally recurrent NPC cohort fills a gap regarding assessment of risk and prediction of survival outcomes after neck dissection in this population and could be further applied to identify high-risk patients who may benefit from more aggressive intervention.

基于内镜图像深度学习的鼻咽恶性肿瘤检测模型的建立与验证

背景与目的由于鼻咽部解剖位置隐匿且腺体增生频发,活检时恶性肿瘤的阳性率较低,从而导致初诊时鼻咽恶性肿瘤确诊延时或漏诊。本文旨在建立一种人工智能工具——基于深度学习的内镜检查,来检测鼻咽恶性肿瘤。方法建立了一种基于内镜图像的鼻咽恶性肿瘤检测模型(endoscopic imagesbased nasopharyngeal malignancies detection model,eNPM-DM),该模型由基于空间结构的全卷积网络构成,采用单独训练集和验证集对分类和分割进行微调。总共收集了28,966张合格图像。其中,自2008年1月1日至2016年12月31日,从7951例个体中获得了27,536张经活检证实的图像,按照7∶1∶2的比例随机分为训练、验证和测试集。此外,将2017年1月1日到2017年3月31日获得的1430张图像纳入预测集,用以对建立模型的性能与肿瘤专家的评价进行比较。以鼻咽镜图像为背景,对自动分割和专家手工分割进行比较,采用dice相似系数(dice similarity coefficient,DSC)评价eNPM-DM从鼻咽部内镜图像的背景中自动分割出恶性肿瘤区域的效率。结果所有图像经过病理组织学验证,包括正常对照5713(19.7%)例、鼻咽癌(nasopharyngeal carcinoma,NPC)19,107(66.0%)例、其他恶性肿瘤335(1.2%)例和3811(13.2%)例良性病变。在测试集中,eNPM-DM检测恶性肿瘤的总准确率达88.7%[95%置信区间(confidence interval,CI):87.8%–89.5%]。在预测比较阶段,eNPM-DM表现优于专家:总准确率分别为88.0%(95%CI:86.1%–89.6%)和80.5%(95%CI:77.0%–84.0%)。eNPM-DM耗时更短(40 s vs. 110.0±5.8 min),且从背景中自动分割出鼻咽恶性肿瘤区域方面表现优秀,测试集和预测集中的平均DSC分别为0.78±0.24和0.75±0.26。结论 eNPM-DM在鼻咽肿块良性/恶性诊断分类方面优于肿瘤学家评估,并且实现了从鼻咽内镜图像背景中对恶性区域自动分割。

Remarkably different results between two studies from North America on genomic mutations and sensitivity to DNA demethylating agents for myelodysplastic syndromes

Sekeres et al. （1） conducted a multicenter randomized, controlled trial to compare whether azacitidine-based combinations with lenalidomide or vorinostat produce superior overall response rates to azacitidine in the treatment of myelodysplastic syndromes （MDS）. In that trial, 224 patients with higher-risk MDS and 53 with chronic myelomonocytic leukemia （CMML） were enrolled and randomly assigned to the ＂azacitidine＂ group, ＂azacitidine plus lenalidomide＂ group or ＂azacitidine plus vorinostat＂ group. The researchers found that patients with MDS treated with azacitidine-based combinations had similar response rate to azacitidine monotherapy. Using genomic mutation analysis, they found that the overall response rate to azacitidine-based treatment was higher for patients with mutations in DNMT3A and lower for those with mutations in SRSF2. Whereas in another study, Welch et al. enrolled 26 patients with MDS and 90 with acute myeloid leukemia （AML） who were treated with decitabine, and they found that patients with TP53 mutations had a higher response rate, but not those with DNMT3A mutations （2）. We propose that this big discrepancy in the conclusions between the two studies might have been caused by the presence of many co-interacting factors, e.g. study aims, DNA demethylating agents, treatment protocols, and patient sources.

Trehalose ameliorates autophagy dysregulation in aged cortex and acts as an exercise mimetic to delay brain aging in elderly mice

Exercise is recognized as an effective strategy to delay brain aging, which is related to the activation of autophagy. Trehalose is a natural compound that can activate autophagy and exert beneficial effects in delaying brain aging. In this study, we investigated whether trehalose may exert neuroprotection similar to those of exercise in delaying age-related cognitive decline. Fifteen-month-old male C57BL/6 mice underwent swim exercise and/or were treated with 2% trehalose for 12 weeks. Trehalose, exercise and the combination of exercise and trehalose intervention improved the learning and memory of aged mice. They also improved the ratio of LC3-II/LC3-I, the protein level of LC3-II, Bnip3L, and Parkin respectively. Additionally, both exercise and trehalose increased the phosphorylation of AMPK. Exercise decreased cortical phosphorylation of m TOR and S6k, whereas trehalose did not change these cortical levels. These data indicated that exercise and trehalose might modulate autophagy through m TOR-dependent or m TOR-independent pathways, respectively. However, a combination of exercise and trehalose did not play a synergistic role in improving cognitive function and modulation of autophagy. Taken together, our findings suggest that trehalose exerts similar effects to those of exercise in delaying age-related cognitive decline and that it may thus represent an exercise mimetic to delay brain aging.

Antidepressant Effect of Shenwei Ningyu Tablets on Rat Chronic Stress Model and Mouse Tail Suspension Model

[Objectives]To explore the antidepressant effect of Shenwei Ningyu Tablet,a new antidepressant traditional Chinese medicine,on rat chronic stress depression model and mouse tail suspension models.[Methods]Rat chronic stress model:except for the normal group,the rats in other groups were given corresponding chronic stress,and administered by gavage 1 h before modeling,for a total of 21 d.The changes of each indicator before and after the experiment were observed through the body weight change,the sugar water test,and open field test.The relevant hormone levels were detected by radioimmunoassay.Mouse tail suspension depression model:after continuous administration for 7 d,the activity times was recorded with the mouse automatic recorder,and the mouse immobility time was recorded after tail suspension,to explore the effects of each administration group on the tail suspension immobility time of mice.[Results]Chronic stress depression model:21 d after modeling,compared with the normal group,rats in the model group exhibited significantly reduced body weight,sucrose preference index,and horizontal and vertical movement scores(P<0.05).Compared with the model group,the low-dose Shenwei Ningyu Tablets group had significant differences in the sugar water test,horizontal and vertical movement scores(P<0.05).In addition,all three dose groups of Shenwei Ningyu Tablets could effectively reduce the content of CRF in chronic stress model rats,and the low dose group could significantly reduce the ACTH level in model rats(P<0.05).Mouse tail suspension depression model:the immobility time after tail suspension in each administration group was significantly different from that in the model group(P<0.05).[Conclusions]Shenwei Ningyu Tablets has a certain anti-depression effect on both the rat chronic stress depression model and the mouse tail suspension depression model.

The study on neuroprotective mechanism of water extract of Fomitopsis Pinicola on mesencephala dopaminergic neurons induced by MPP+

目的:观察松生拟层孔菌水提物在体外对MPP+诱导胎鼠中脑细胞元损伤的保护作用。方法:采用FRA P法观察松生拟层孔菌水提物的抗氧化作用;L P S诱导N O 释放法观察松生拟层孔菌水提物的抗炎作用;DAPI染色观察细胞核的形态变化,JC -1染色检测线粒体膜电位的变化,C-DCDHF-DA染色观察R O S生成的变化。结果:松生拟层孔菌水提物抗氧化能力为(165.80±7.13)μmol TEAC/g提取物;松生拟层孔菌水提物作用后,对N O 释放量具有明显的降低作用,其中100, 50, 25,12.5胆/m l剂量组与L P S组比较具有显著性差异;MPP+诱导后中脑多巴胺能神经元细胞核出现明显的染色质浓缩并伴有细胞核裂解,线粒体膜电位明显下降,R O S生成明显升高。松生拟层孔菌水提物对细胞凋亡后细胞核的形态变化具有一定的改善作用;其可以提升线粒体膜电位,其中50、2 5 和12.5胆/m l剂量组与MPP+组比较具有显著性差异;其对ROS生成具有明显的抑制作用,其中5 0 和25胆/m l剂量组与MPP+组比较具有显著性差异。结论:松生拟层孔菌水提物具有明显的抗氧化、抗炎作用,其保护多巴胺能神经元的作用机制可能与抑制线粒体氧化应激有关。

Exercise-induced microbial changes in preventing type 2 diabetes

The metabolic benefits associated with long-term physical activity are well appreciated and growing evidence suggests that it involves the gut microbiota.Here we re-evaluated the link between exercise-induced microbial changes and those associated with prediabetes and diabetes.We found that the relative abundances of substantial amounts of diabetes-associated metagenomic species associated negatively with physical fitness in a Chinese athlete students cohort.We additionally showed that those microbial changes correlated more with handgrip strength,a simple but valuable biomarker suggestive of the diabetes states,than maximum oxygen intake,one of the key surrogates for endurance training.Moreover,the causal relationships among exercise,risks for diabetes,and gut microbiota were explored based on mediation analysis.We propose that the protective roles of exercise against type 2 diabetes are mediated,at least partly,by the gut microbiota.

Socialized care services for the aged population:System construction and support measures

Given the aging society,an increase in social demand,information-and communication technology-driven culture,and government policy support emerges to enable the development of the socialized care services system for the aged(SCSSA).The development of the SCSSA would be a significant step toward addressing China’s aging population.However,the construction of the SCSSA challenges the theories and methods of traditional elderly care service system construction.Specifically,the implementation path for such elderly care service policies is unclear,the necessary technological support is insufficient,and the mechanism for integrating intelligent information technology remains underexplored.Thus,this paper focuses on the needs of the elderly,grounded in the context of the changing elderly care service policies in China,and proposes a research paradigm that integrates system construction and support measure embedding.We then construct the original SCSSA,which includes“material+spirit+medical treatment+healthcare”and propose a method of optimization and iteration.Finally,we build the research framework of systematic support measures from the perspectives of policy reconstruction,institutional embeddedness,and technical support.Our work provides theoretical support and practical guidance for the construction and dynamic optimization of the SCSSA,thus making a significant contribution that will help China effectively cope with its aging society.

A Case of Waldenström Macroglobulinemia with Acute Kidney Injury as the First Manifestation and Literature Review

Waldenström macroglobulinemia is a rare lymphoid tumor accounting for 2% of all hematological malignancies. Renal complications are less common compared to multiple myeloma, with the most frequent renal manifestations being microproteinuria and microhematuria. This paper presents a case of Waldenström macroglobulinemia with acute kidney injury as the initial manifestation. A 75-year-old male was admitted to the Affiliated Hospital of Hebei University after elevated blood creatinine levels were detected for one day. Upon admission, his blood creatinine was 255 μmol/L, urine protein was 1+, urine erythrocytes were negative, electrophoresis showed IgM positivity in the κ-region, and a bone marrow biopsy indicated a tendency towards lymphoplasmacytic lymphoma. The patient was discharged after receiving a treatment regimen of prednisone acetate, thalidomide, and cyclophosphamide, and continued oral medication outside the hospital. The patient returned two weeks later due to diarrhea and was found to have a blood creatinine level of 985 μmol/L, along with severe acidosis and hyperkalemia. The patient refused renal replacement therapy and was not followed up, resulting in a poor prognosis. Additionally, a review of the literature is provided to contextualize this case within the broader scope of existing research.